National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Harrisburg-Raleigh Airport (KHSB)

Lat: 37.81°NLon: 88.54°WElev: 387ft.

Fair

73°F

23°C

Humidity 91%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 18 Aug 6:35 am CDT
Extended Forecast for

Cave In Rock IL

Heat Advisory August 18, 06:47am until August 19, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 18, 06:47am until August 19, 07:00pm

    NOW until 7:00pm Tue

    Heat Advisory

  • Today

    High: 94 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Calm wind.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Calm wind becoming north around 6 mph in the afternoon.

    High: 90 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 67. North wind 3 to 6 mph.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 87. North northeast wind around 6 mph.

    High: 87 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. North northeast wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 94. Calm wind becoming east southeast around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 73. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Calm wind.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Calm wind becoming north around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 67. North wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 87. North northeast wind around 6 mph.
Thursday Night
Mostly clear, with a low around 66. North northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 89. Light north northeast wind.
Friday Night
Mostly clear, with a low around 65. Calm wind.
Saturday
Sunny, with a high near 89. Light north northwest wind.
Saturday Night
Mostly clear, with a low around 64. Light north northwest wind.
Sunday
Sunny, with a high near 84. Calm wind becoming north northwest around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cave In Rock IL
 37.55°N 88.25°W
Last Update:
5:46 am CDT Aug 18, 2025
Forecast Valid:
6am CDT Aug 18, 2025-6pm CDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation